Complete ICD-10-CM coding and documentation guide for icd-10 coding for polymyositis includes clinical validation requirements, medical necessity guidelines, and coding policies.
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Essential facts and insights about ICD-10 Coding for Polymyositis
Use ICD-10 code M33.22 for polymyositis with myopathy, ensuring proper documentation in clinical notes.
Additional codes that may be used with this diagnosis
Abnormal EMG
Use when EMG shows short polyphasic MUPs, fibrillations, and bizarre high-frequency discharges.
Interstitial lung disease
Use when interstitial lung disease is present.
The ICD-10 code for polymyositis is M33.2, with specific subcodes like M33.21 for respiratory involvement and M33.22 for myopathy.
For polymyositis with lung involvement, use M33.21. Ensure documentation includes PFTs and HRCT findings to support the code.